10021002102021 has 4 divisors (see below), whose sum is σ = 13361336136032. Its totient is φ = 6680668068012.

The previous prime is 10021002101987. The next prime is 10021002102043. The reversal of 10021002102021 is 12020120012001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10021002102021 - 2¹¹ = 10021002099973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021002101988 and 10021002102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021002102061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670167017001 + ... + 1670167017006.

It is an arithmetic number, because the mean of its divisors is an integer number (3340334034008).

Almost surely, 2^{10021002102021} is an apocalyptic number.

It is an amenable number.

10021002102021 is a deficient number, since it is larger than the sum of its proper divisors (3340334034011).

10021002102021 is an equidigital number, since it uses as much as digits as its factorization.

10021002102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340334034010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10021002102021 its reverse (12020120012001), we get a palindrome (22041122114022).

The spelling of 10021002102021 in words is "ten trillion, twenty-one billion, two million, one hundred two thousand, twenty-one".